EP2111897A2

EP2111897A2 - Collapsible conveyer apparatus

Info

Publication number: EP2111897A2
Application number: EP08170854A
Authority: EP
Inventors: Yu-Han Hung; Chung-En Tseng
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-05
Filing date: 2008-12-05
Publication date: 2009-10-28
Also published as: EP2111897A3; JP2009136683A; TWI361085B; JP5107877B2; TW200924816A

Abstract

A collapsible conveyer apparatus comprises at least one carrier accommodated on a windowsill of a building and serving as a window grille in a collapsed state. If necessary, the carrier is unfolded by a push rod device and is descended slowly along an outer wall of the building by a drive mechanism for conveying personnel or commodities. In the event of a fire accident, personnel or precious commodities can be immediately evacuated from the building. Even in case of power failure caused by the fire accident, the drive mechanism can be operated by spare electricity or manually operated.

Description

BACKGROUND OF THE INVENTION

1. Field of the invention

This invention relates to a conveyer apparatus, particularly to a collapsible conveyer apparatus accommodated on the windowsill of a building which serves as a window grille in a collapsed state and can be unfolded in an emergency state such as fire accident for evacuating personnel or commodities along the outer wall of the building.

2. Brief Description of the Prior Art

Generally, a building is provided with windowsills or balconies for good lighting, ventilation or good landscape purpose. For security reason, a iron grille for burglar proof is often attached in each window and thus is apt to becomes an obstacle for escaping in an emergency condition. Thus, this may incur significant loss in life and properties.
In order to estimate the defect of retardation on escaping caused by the iron grille in traditional building, a transport equipment has been proposed as shown in Figures24a and 24b for delivering personnel or commodities, in an emergency case, along the outer wall (10") of a building (1") having at least one windowsill (11"). The transport equipment comprises: a carrier (20") accommodated on the windowsill (11"), which has a pair of suspension cables (21") provided on the top portion and a pair of pulleys (22") arranged at least on the outside of the bottom portion; a slowly descending mechanism (30") fixed above the carrier (20"), which has a pair of swinging arms (40") capable of pivoting outward and a pulley (41") pivotally provided at the end of each swinging arm (40"); a pair of winches (50") for winding a pair of cables (51") one ends of which are fixed on each winch (50") and the other ends of which are wound around the pulleys (41") and extended downward to coupled with the suspension cables (21"); at least one reduction mechanism (60") used to activate the pair of winches (50") to rotate at a predetermined speed; a pair of guide rails (12") arranged vertically on the outer wall (10") of the building (1"); and a pair of push rods (70") used to push the swinging arms (40") outward and to force the pair of pulleys (22") of the carrier to engage on the pair of guide rails (12"). Thus, the swinging arms are controlled to push the carrier out of the windowsill, and the carrier can be moved up and down along the outer wall of the building for delivering personnel and commodities in the emergency state.
Basically, this conventional technology can solve the defect of retardation on escaping caused by additional attachment of the iron grille to the window of a building. However, the carrier is in a cage shape which takes very large space in a normal condition. Furthermore, if the provision of the guide rails is restricted by the building, the carrier might have a problem of unstable running when descending vertically from a high position. Accordingly, improvement on such a conventional technology or on application is expected.
Further, as shown in Figures 25a, 25b and 25c, a transport equipment" is used to transport personnel and commodities, in the emergency condition, along the outer wall (10") of a building (1") having at least one windowsill (11"). The transport equipment comprises: a carrier (20") accommodated on the windowsill (11"), which has a pair of drive gears (23") provided symmetrically on the upper end of both sides; at least one reduction mechanism (60") fixed on the carrier (20") for acting the pair of the drive gears (23") to rotate at a predetermined speed; a pair of guide rails (12") arranged vertically along the outer wall (10") of the building (1") and provided with teeth (123"), and with at least one guiding portion (122") in horizontal direction with respect to the pair of rails (12") so as to accommodate the drive gears (23"); and a pair of push rods (70") for pushing the swinging arm (40") outward and for engaging the pair of pulleys (22") with the pair of rails (12"). The carrier (20") is pushed out of the windowsill (11") so that each drive gear (23") engages with the teeth (123") of each guide rail (12").
The carrier (20") is formed by a first face structure (20a"), a second face structure (20b") and a third face structure (20c"). On each literal faces, the carrier (20") has a plurality of telescopic tubes (202") disposed between the first face structure (20a") and the second face structure (20b"), one end of the each tube (202") being connected on the first face structure (20a"), the other end passing through the second face structure (20b") so that the second face structure (20b") is allowed to slide along the telescopic tube (202"), the third face structure (20c") being disposed at the bottom between the first face structure (20a") and the second face structure (20b") and being capable of folding onto the first face structure (20a"). A plurality of elongated receiving grooves (111") corresponding to the telescopic tubes (202) are provided on the floor (110") of the windowsill (11") such that the telescopic tubes (202") of the carrier (20) in a collapsed state are received within the elongated receiving grooves (111"). In this manner, the carrier can be pushed out of the windowsill to be unfolded in the emergency state and ascends or descends along the guide rails on the outer wall of the building so as to transport personnel or commodities.
In the later one discussed above, the carrier can be collapsed to a small volume for storage in the normal state, but the improvement on the configuration for collapsing and unfolding is to be expected.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide a collapsible conveyer apparatus by which the defect of space-occupation in the windowsill by the cage type carrier can be eliminated by a collapsible carrier.
In order to achieve above and other objects, the present invention provides a collapsible conveyer apparatus installed on a building having at least one windowsill, comprising: a pair of guiding rails vertically arranged on an outer wall corresponding to both lateral sides of the windowsill, the guiding rails being provided with teeth; a carrier configured as a collapsible frame-type structure which is accommodated on the windowsill in a collapsed state; at least one first drive mechanism fixed above the windowsill for extending or retracting a pair of push rod devices so as to unfold or collapse the carrier; at least one second drive mechanism installed on the carrier for driving a pair of drive gears engaged with the teeth so that the carrier ascends or descends along the guide rails.
In this manner, the carrier accommodated on the windowsill serves as a window grille in the collapsed state. In the event of a fire accident, the carrier is unfolded by the push rod devices and driven by the second drive mechanism to ascend and descend slowly along the guide rails so as to evacuate personnel or precious commodities immediately.
Another object of this invention is to provide a collapsible conveyer apparatus which is a solution to the problem found in the prior art that if the provision of the rails is restricted by the building, the carrier descending vertically from a high position may unstably run, thus improving the suspension way of the carrier.
To achieve the above and other objects, this invention provides a collapsible conveyer apparatus installed on a building having at least one windowsill, comprising: a carrier configured as a collapsible frame-type structure which is accommodated on the windowsill in a collapsed state, each of the corners of the carrier being provided with a lower pulley; at least one drive mechanism fixed above the windowsill, capable of driving one end of of each of a pair of push rod devices for the other end thereof to extend or retract, and a steering pulley set with a plurality of steering pulleys being provided pivotally on the push rod device ; and at least one winding gear fixed on the windowsill to activate a pair of winding drums around each of which one end of a cable is wound, the other end, that is fixed end, of the cable being wound past the steering pulley set and the lower pulley of the carrier and terminating at a fixed point where it is anchored; when the push rod is stretched, the carrier is stretched at the same time and pushed out of the windowsill.
Thus, such pair of cables are wound past the pulley on both sides of the bottom port ion of the carrier with one end anchored and the other end trailed by the wind gear whereby even in case of no guidance by rail, a stable and slow vertical descending or ascending is possible with the result that in case of fire, personnel or precious commodities can be evacuated immediately.
Still another object of this invention is to provide a collapsible conveyer apparatus which is a solution to the problem found in the prior art that if the provision of the rails is restricted by the building and obstacles are present at the lower portion of the outer wall of the building, the carrier cannot be smoothly descended to the ground.
To achieve the above and other objects, this invention provides a collapsible conveyer apparatus installed on a building having at least one windowsill, comprising: a carrier configured as a collapsible frame-type structure which is accommodated on the windowsill in a collapsed state, each of the corners of the carrier being provided with a lower pulley; a pair of radial arms with one end as a fixed end fixed on the carrier and the other end as a free end capable of swinging, each of the radial arms being provided with many pulley sets; at least one winding gear fixed on the windowsill to activate a pair of winding drums around each of which one end of a cable is wound, the other end, that is fixed end, of the cable being wound past the steering pulley set and the lower pulley of the carrier and terminating at a fixed point where it is anchored; and at least one drive mechanism fixed above the windowsill, capable of driving one end of of each of a pair of push rod devices for the other end thereof to extend or retract when the push rod is stretched; upon stretching, the radial arms is activated at the same time to freely swing for the carrier to be stretched and pushed out of the windowsill.
Thus, with such pair of radial arms, the carrier can be descended vertically to a farther ground away from the building and obstacles at the lower portion of the outer wall of the buildingare may be avioided whereby in case of fire, personnel or precious commodities can be evacuated immediately.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a perspective view showing the collapsible conveyer apparatus of a first embodiment of the present invention in operation when installed in a building;
Figure 2 is a sectional schematic view of the first embodiment according to the present invention in which a carrier accommodated on the windowsill in a collapsed state is shown;
Figure 2a shows a sectional view taken from the 2a-2a direction of Figure 2, in which a partial schematic view of a holder device is shown;
Figure 3 is a partial perspective view showing the guide rails of the first embodiment according to the present invention;
Figure 4 is schematic view showing the carrier in the collapsed state of the first embodiment according to the present invention;
Figure 5 is a schematic view showing the carrier in the collapsed state;
Figure 6 shows a sectional view taken from the 6-6 direction of Figure 5, in which a partial schematic view of the second drive mechanism arranged on the carrier is shown;
Figure 7 is a perspective view showing the carrier of Figure 4 in the unfolded state;
Figure 8 is a sectional schematic view showing the using state of the first embodiment according to the present invention, in which the carrier is shown to be unfolded to ascend and descend along the outer wall of a building;
Figure 8a is a sectional view taken along 8a-8a direction of Figure 8, in which the carrier is schematically shown to return to its original floor;
Figure 8b is a partial schematic view showing the matching relationship between the guide rails of each floor and the drive gear of the carrier;
Fig. 9 is a sectional view according to a second embodiment of the present invention, schematically showing the carrier in collapsed position to be accommodated on the windowsill;
Fig. 10 is a perspective view according to the second embodiment of the present invention, showing the carrier being partially in unfolded position;
Fig. 11 is a partially sectional view of the edge frame of the carrier according the present invention;
Fig. 12 is a partially perspective view of the guide rails according to the second embodiment of the present invention;
Fig. 13 is a sectional view of the second embodiment according to the present invention in use, showing the carrier in unfolded position to be ascended and descended along the outer wall of the building;
Fig. 14 is a sectional view according to a third embodiment of the present invention, schematically showing the carrier in collapsed position to be accommodated on the windowsill;
Figure 14a is a sectional view taken along 14a-14a direction of Figure 14, in which holder device is schematically shown;
Fig. 15 is a perspective view according to the third embodiment of the present invention, showing the carrier being partially in unfolded position;
Fig. 15a is a partially schematic view sowing a brake according to the present invention;
Fig. 16 is an imaginative guide rail to explain that the third embodiment of the present invention can be implemented in connection with the guide rails.
Fig. 17 is a sectional view of the third embodiment according to the present invention in use, showing the carrier in unfolded position to be ascended and descended along the outer wall of the building;
Fig. 18 is a sectional view according to a fourth embodiment of the present invention, schematically showing the carrier in collapsed position to be accommodated on the windowsill;
Fig. 19 is a sectional view of the fourth embodiment according to the present invention in use, showing the carrier in unfolded position to be ascended and descended along the outer wall of the building;
Fig. 20 is a schematic view showing the conveyer in collapsed position according to a first variation of the present invention;
Fig. 21 is a schematic view of the carrier of Fig. 20 in unfolded position;
Fig. 22 is a schematic view showing the conveyer in collapsed position according to a second variation of the present incvention;
Fig. 23 is a schematic view of the carrier of Fig. 22 in unfolded position;
Figures 24a and 24b show a conventional transport equipment, being a schematic view of Taiwan Invention Patent Application No. 96117123 ; and
Figures 25a, 25b and 25c show another conventional transport equipment, being a schematic view of US Serial No. 11/827, 150 .

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The technical contents of the present invention will become more apparent from the detailed description of the preferred embodiments in conjunction with the accompanying drawings. It is noted that the preferred embodiments are purely for illustrative, not for restrictive purpose.
Firstly, a general building basically has a windowsill or balcony provided on the outer wall for good lighting, ventilation and landscape purpose. This invention utilizes the windowsill of the building to accommodate the carrier of the conveyer apparatus in such a way that the carrier serves as a window grille in a collapsed state. In the emergency state such as a fire accident, the carrier can be unfolded so as to evacuate personnel or commodities along the outer wall of the building. In conjunction with Figures 1 to 8b, explanation to the operation of the collapsible conveyer apparatus according to a first embodiment of the present invention will be made. According to the present invention, the structure of the collapsible conveyer apparatus will be described in detail.
A pair of guide rails 2, such as C type steel beams, are arranged on the outer wall 11 of the building 10. One inner side of each guide rail 2 is provided with teeth 21 or a rack. The windowsill 11 is associated with two opposite sidewalls 110. As shown in Figures 1 and 3, a pair of horizontal upper guide rails 2a and a pair of horizontal lower guide rails 2a' diverged from the pair of guide rails 2 respectively are formed on the two sidewalls 110. The lower inner side of each of upper and lower guide rails is provided with teeth 21' or a rack.
The carrier 3 is formed by collapsible frame bodies and is accommodated on the windowsill11 in the collapsed state for serving as a window grille. The carrier 3, as shown in Figures 4, 5 and 7, comprises a plurality of face structures 3a, 3b at an outer side (front side) and an inner side (rear side), a plurality of collapsible frame 3d at literal sides and a collapsible base plate 3e a bottom side. Each frame 3d has, at a middle location, a conventional ratchet joint J, the detailed description of which is omitted, and both ends of each frame 3d are connected with the face structures 3a, 3b respectively by ratchet joints J such that each frame 3d is collapsible at the middle location with respect to the face structures 3a, 3b. Further, the base plate 3e has a conventional ratchet joint J in a central line parallel to the face structures 3a, 3b, and an outer edge (front edge) and an inner edge (rear edge) of the base plate 3e are connected with the face structures 3a, 3b respectively by ratchet joints J. Therefore, the volume of the carrier 3 can be reduced by collapsing the frames 3d and the base plate 3e. In addition, an openable door structure 3b' accessible by passengers is contained in the face structure 3b of the carrier 3.
The first drive mechanism 4 containing an electric activation mechanism 45 and a manual activation mechanism 46 is fixed above the windowsill 11 and controlled to drive simultaneously the push rod devices 40 located at the left and right hand sides respectively above the carrier 3 so as to unfold the carrier 3. Each push rod device 40 has a telescopic rod 41 one end of which is activated by a screw rod 42 so as to extend the other end of the telescopic rod 41. The mechanical force generated from the electric activation mechanism 45 or the manual activation mechanism 46 can be transmitted to the screw rods 42 through, for example, a pair of coaxial bevel gears 44 so that the pair of telescopic rods 41 can be simultaneously activated.
The second drive mechanism 30 containing an electric activation mechanism 301 and a manual activation mechanism 302 is provided on the carrier 3 and is controlled to drive simultaneously a pair of drive gears 31. The transmission among the electric activation mechanism 301, the manual activation mechanism 302 and the drive gears 31 is conducted by a bevel gear 300, as shown in Figure 6. A conventional type control unit (not shown) is electrically connected with the first drive mechanism 4 and the second drive mechanism 30.
Referring to Figure 2, the carrier 3 has a face structure 3a located at the outer side and a face structure 3b located at the inner side. The pair of drive gears 31 are rotably provided at the lower end of the inner side face structure 3b of the carrier 3 corresponding to the position of the lower guide rails 2a'; and a pair of idler gears 32 are rotably provided at the upper end of the inner side face structure 3b of the carrier corresponding to the guide rails 2a. The pair of drive gears 31 and the pair of idler gears 32 can engage respectively with the teeth 21 and the teeth 21' of the pair of guide rails 2 so that the carrier 3 can move automatically along the guide rails 2. The push rod devices 40 are provided with a conventional type holder device 43 corresponding to a parking position of the carrier 3 for holding the face structure 3b at the inner side of the carrier 3 onto the windowsill, as shown in Figure 2a. The ends of the telescopic rods 41 are provided with two claws 411 corresponding to the outer side face structure 3a of the carrier 3 respectively for holding the left and the right hand sides. Therefore, the carrier 3 can be collapsed or unfolded by means of the claws 411.
According to the present invention, as shown in Figure 8, the collapsible carrier can be unfolded to convey personnel or commodities along the outer wall of building in the emergency state. For example, in the event of a fire accident, the push rod devices 40 actuate the telescopic rods 41 so as to unfold the carrier 3. After personnel or commodities are accommodated in the fully unfolded carrier 3, the telescopic rods 41 keep extending and the second drive mechanism 30 starts to drive the carrier 3 such that the carrier 3 separates from the holder device 43 and engages the guide rails 2 along the separated rails 2a, 2a'. Therefore, the carrier 3 can ascend or descend slowly along the outer wall of building. On the other hand, the telescopic rods 41 stop extending until the carrier 3 engages the guide rails 2. After elimination of the fire accident, the carrier 3 ascends slowly so that the drive gears 31 and idler gears 32 align with the horizontal guide rails 2a, 2a' respectively, and the carrier 3 is captured by the claws 411 provided on the telescopic rods 41. Then, the carrier 3 is drawn inwardly along the guide rails 2a, 2a'by the telescopic rods 41 . The carrier 3 is then holded by the holder device 43, and the ratchet joints J of the carrier 3 are unlocked by conventional means such as solenoid, electromagnetic valve or manual actuation device (not shown). The carrier 3 is then pressed to be collapsed so as to be accommodated on the windowsill 11 in place. Additionally, the control unit further has an uninterruptible power system (not shown) which services as a spare power supply and is electrically connected with the electric activation mechanism 45 of the first drive mechanism 4 and the electric activation mechanism 301 of the second drive mechanism 30 respectively. Thus, even in the case of power failure caused by the fire accident, the carrier 3 can also be operated by uninterruptible power system or be manually operated.
Further, the present invention is preferably implemented in a building having a plurality of floors. Each floor may be provided with one or more windowsills 11. Each windowsill 11 is arranged with a respective carrier 3. A pair of guide rails 2 can serve the plurality of floors. If the windowsills 11 are substantially vertically aligned with each other, the pair of guide rails 2 can be commonly used among the floors. Figure 8a and Figure 8b show the matching relationship between the horizontal rails of each floor and the drive gears of the carriers. As seen in Figure 8a and Figure 8b, the horizontal rails on each floor are differently sized, and the drive gears of the carrier disposed on each floor are also differently sized, correspondingly. According to the present invention, the lower the carrier 3 is arranged, the smaller axial thickness the drive gears 31 and idler gears 32 of the carrier 3 have. On the other hand, the higher the carrier 3 is arranged, the larger axial thickness the drive gears 31 and idler gears 32 of the carrier 3 have. In other word, if the horizontal upper and lower guide rails 2a and 2a' are provided on a higher floor, the width (thickness) thereof are set larger so that the carrier 3 serving the higher floor with the drive gears 31 of the larger axial thickness would not engage with the horizontal guide rails arranged on the lower floor when passing the lower floor.
Figs. 9 to 13 illustrate a collapsible conveyer apparatus implemented on a building according to a second embodiment of the present invention. The present embodiment is different from the above embodiment in that the carrier 3 which is not of self propelling type is driven by a winding gear. According to the present invention, the collapsible conveyer apparatus primarily comprises a pair of guide rails 2 made of C shaped steel in cross section and vertically installed on the outer wall 10 at both sides of the windowsill 11. The windowsill 11 has two side walls 110 opposite to each other, while each of the pair of guide rails 2 is formed with a pair of horizontal rails including an upper rail 2a and a lower rail 2b spaced apart from each other along both side walls 110 of the windowsill 11.
At least a carrier 3 is formed of a collapsible frame structure. In a collapsed state, the carrier 3 is accommodated on the windowsill 11 as a window grille. As shown in Fig. 10, the carrier 3 is formed by connecting a plurality of face structures 3a, 3b in the direction of length with a plurality of collapsible frames 3d in the direction of width, while a plurality of base plate3e collapsible in the direction of width is connected to the bottom end of the carrier 3. A conventional ratchet journal J with one way pawl(for this element is prior art, no detailed description is given) is provided at the middle portion of the frames 3d for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. A ratchet journal J is provided at the middle portion of the base plate3e for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. In this manner, the volume of the carrier 3can be minimized. In the carrier 3, the face structures 33b of the windowsill 11 further comprises a door frame 3b'allowing to be opened relatively for the personnel to be in and out. Additionally, several pulleys 34 are respectively provided at the left and right inner sides of the carrier 3 facing the windowsill 11 which is guided by the guide rails 2.
At least a drive mechanism 4 containing an electric activation mechanism 45 and a manual activation mechanism 46 is fixed above the windowsill 11 and controlled to drive simultaneously one end of each of a pair of push rod devices 40 for the other end to extend and retract. The pair of push rod devices 40 are located at the left and right hand sides respectively above the carrier 3 so as to unfold the carrier 3. Each push rod device 40 has a telescopic rod 41 one end of which is activated by a screw rod 42 for the other end of the telescopic rod 41 to extend and retract.. The mechanical force generated from the electric activation mechanism 45 and the manual activation mechanism 46 can be transmitted to the screw rods 42 through, for example, a pair of coaxial bevel gears 44 so that the pair of telescopic rods 41 can be simultaneously activated. And, several pulley sets 65a, 65b are pivotally provided on the push rod device 40 respectively.
At least a winding gear 6 including an electric activation mechanism 63 and a manual activation mechanism 64 is fixed above the windowsill 11 wherein the electric activation mechanism 63 drives an oil cylinder with a conventional oil pump to converse into a rotational movement for activating a pair of coaxial windlasses 62. Such pair of windlasses 62 are respectively wound with one end of a cable 61, while the other end of the cable is wound past the above mentioned pulley sets 65a, 65b with the end to hang the carrier 3 to provide power to the carrier 3. And, a conventional control unit (not shown) is connected electrically to the drive mechanism 4 and the winding gear 6 respectively.
Again as shown in Fig. 9, on a position relative to the windowsill 11, this carrier 3 comprises an internal face structures 3b and an external face structures 3a. The left and right side of the carrier 3 are suspended respectively on the end of the cable 61of the winding gear 6 by a pair of suspension cable 61 a both ends of which extends respectively in the internal face structures 3b and the external face structures 3a and respectively provide with an elastic element 35 for exerting a spring force to draw the remaining length inside the frame (as shown in Fig 11). A pair of pulleys 34 are provided on the place where the upper outside of the internal face structures 3b corresponds to the upper rail 2a and a pair of pulleys 34 are provided on the place where the lower outside corresponds to the lower rail 2a' whereby the carrier 3 can slide horizontally along the separated rails 2a and 2a' and vertically move. On a fixing point corresponding to the place where the above push rod 40 parks, the above push rod devices 40 are provided with a conventional holder device 43 (see Fig. 2a) which can hold the internal face structures 3b of the carrier 3 in position on the windowsill 11 with a predetermined force. The ends of the pair of telescopic rod 41 each is provided with a claw 411 corresponding to the external face structures 3a of the carrier 3. Claws 411 are respectively provided on the left and right side, between which the carrier can be folded relatively or unfolded. Additionally, this embodiment includes a pair of sliding block 48 which can slide along the telescopic rod 41. A steering pulley 65b is pivotally provided on the sliding block 48 to pull the cable 61, whereby as the carrier is unfolded, it depends on the shift of gravity center of the carrier 3 to slide. Further, a pull rod 412 is provided on the end of the telescopic rod 41. When the carrier 3 is unfolded, the sliding block 48 and the telescopic rod 41 are driven to perform a link motion.
According to the present invention, as shown in Fig. 13, in a situation in need, the conveyer is unfolded along the outer wall to covey personnel or commodities. For example on fire, the push rod device 40 is driven for the telescopic rod 41 to extend and the carrier 3 to unfold. At this time, the winding gear 6 is driven to simultaneously release the cable 61. After the carrier 3 is completely unfolded for personnel or commodities to get in, the telescopic rod 41 continues to extend for the carrier 3 to separate from the holder device 43. In the same time, as the gravity center of the carrier 3 shifts, the sliding block 48 driven by the pull rod 412 slides. The carrier 3 enters the main guide rails 2 along the separated rails 2a and 2a' so as to slowly descend or ascend along the outer wall of the building. On the other hand, after the carrier 3 is pushed into the main guide rails 2 by the telescopic rod 41, the carrier 3 stays where it is. On the contrary, when the emergency of the fire is released, the winding gear 6 is driven to pull the carrier 3 up to the level of the separated rails 2a and 2a'. In the same time, the carrier 3 falls between the claws 411 of the telescopic rod 41. Afterwards, the telescopic rod 41 begins to retract to push the carrier 3 into the separated rails 2a and 2a' and insert it in the holder device 43. After the claws(not shown) of the ratchet joint J of the carrier 3 is released manually or by conventional means such as electromagnetic valve, the carrier 3 begins to be squeezed as well as folded and then accommodated in position on the windowsill 11.Besides, the control unit includes an uninterruptible power supply device(not shown) which is electrically connected with the electric activation mechanism 45 of the drive mechanism 4 and the drive mechanism 63 of the winding gear 6. Therefore, even the power supply is interrupted during fire, the carrier 3 may be operated by spare power or manually.
Figs. 14 to 17 illustrate a third embodiment of the collapsible conveyer apparatus implemented on a building. The difference between this embodiment and the above embodiments is that the suspension way is different. Even without guide rail, the carrier can be smoothly and slowly ascended and descended. According to the present invention, the main structure of the collapsible conveyer apparatus will be described in detail.
At least a carrier 3 is formed of a collapsible frame structure. In a collapsed state, the carrier 3 is accommodated on the windowsill 11 as as a window grille. As shown in Fig. 15, the carrier 3 is formed by connecting a plurality of face structures 3a, 3b in the direction of length with a plurality of collapsible frames 3d in the direction of width, while a base plate3e collapsible in the direction of width is connected to the bottom end of the carrier 3. A conventional ratchet journal J with one way pawl (for this element is prior art, no detailed description is given) is provided at the middle portion of the frames 3d for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. A ratchet journal J is provided at the middle portion of the base plate3e for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. In this manner, the volume of the carrier 3can be minimized. In the carrier 3, the face structures 33b of the windowsill 11 further comprises a door frame 3b' allowing to be opened relatively for the personnel to be in and out. Additionally, a lower pulley 36 is provided at the corners on the bottom of the carrier 3.
At least a drive mechanism 4 containing an electric activation mechanism 45 and a manual activation mechanism 46 is fixed above the windowsill 11 and controlled to drive simultaneously one end of each of a pair of push rod devices 40 for the other end to extend and retract. The pair of push rod devices 40 are located at the left and right hand sides respectively above the carrier 3 so as to unfold the carrier 3. Each push rod device 40 has a telescopic rod 41 one end of which is activated by a screw rod 42 for the other end of the telescopic rod 41 to extend and retract.. The mechanical force generated from the electric activation mechanism 45 and the manual activation mechanism 46 can be transmitted to the screw rods 42 through, for example, a pair of coaxial bevel gears 44 so that the pair of telescopic rods 41 can be simultaneously activated. And, several pulley sets 65a, 65b are pivotally provided on the push rod device 40 respectively.
At least a winding gear 6 including an electric activation mechanism 63 and a manual activation mechanism 64 is fixed above the windowsill 11 wherein the electric activation mechanism 63 drives an oil cylinder with a conventional oil pump to converse into a rotational movement for activating a pair of coaxial windlasses 62. Such pair of windlasses 62 are respectively wound with one end of a cable 61, while the other end of the cable is wound past the above mentioned pulley sets 65a, 65b with the end to hang the carrier 3 to provide power to the carrier 3. And, a conventional control unit (not shown) is connected electrically to the drive mechanism 4 and the winding gear 6 respectively.
Again as shown in Fig. 14, on a position relative to the windowsill 11, this carrier 3 comprises an internal face structures 3b and an external face structures 3a. The lower pulleys 36 are respectively provided inside the lower end of the edge frame of the internal face structures 3b and the external face structures 3a . And preferably, the upper pulleys 36' are respectively provided inside the upper end of the edge frame of the internal face structures 3b and the external face structures 3a to guide the cable 61. On a fixing point of the windowsill 11 corresponding to the place where the above push rod 40 parks, the above push rod devices 40 are provided with at least a conventional holder device 11a which can hold the internal face structures 3b of the carrier 3 in position on the windowsill 11 with a predetermined force. The above push rod devices 40 are each provided with a pair of sliding block 48 one end of which can slide along the telescopic rod 41, and the other end of which is provided with a claw 481 corresponding to the internal face structures 3b of the carrier 3. The end of the telescopic rod 41 is provided with a claw 411 corresponding to the external face structures 3a of the carrier 3 to grip on left and right side, both of which can put the carrier 3 into collapsed or unfolded position. A steering pulley 65b is pivotally provided on the end of the telescopic rod 41. Each of the cable pair 61 is wound through the steering pulley 65b to vertically extend into the edge frame of the external face structures 3a of the carrier 3, and subsequently wound through the upper pulleys 36' and the lower pulleys 36, and then extended toward the edge frame of the internal face structures 3b to be wound through the lower pulleys 36 and the upper pulleys 36' with the fixing end 611 to be anchored on the fixing point of the sliding block 48 by means of a fixing piece 482. Further, a pull rod 412 is provided on the end of the telescopic rod 41. When the carrier 3 is unfolded, the sliding block 48 and the telescopic rod 41 are driven to perform a link motion.
According to the present invention, as shown in Fig. 17, in a situation in need, the conveyer is unfolded along the outer wall to covey personnel or commodities. For example on fire, the push rod device 40 is driven for the telescopic rod 41 to extend and the carrier 3 to unfold simultaneously. At this time, the winding gear 6 is driven to simultaneously release the cable 6. After the carrier 3 is completely unfolded for personnel or commodities to get in, the telescopic rod 41 continues to extend for the carrier 3 to separate from the holder device 43. In the same time, as the gravity center of the carrier 3 shifts, the sliding block 48 driven by the pull rod 412 slides to push outside the windowsill 11 the carrier 3 which then slowly descends or ascends along the outer wall of the building. On the other hand, After the carrier 3 is pushed outside the windowsill 11, the telescopic rod 41 and the sliding block 48 stay where they are. On the contrary, when the emergency of the fire is released, the winding gear 6 is driven to pull the carrier 3 up to the descending point. The external face structure 3a and the internal face structure 3b respectively fall into the claws 411 of the end of the telescopic rod 41 and the claws 481 of the sliding block 48. Afterwards, the telescopic rod 41 begins to retract to push the carrier 3 into the holder device 11 a. After the claws(not shown) of the ratchet joint J of the carrier 3 is released manually or by conventional means such as electromagnetic valve, the carrier 3 begins to be squeezed as well as folded and then accommodated in position on the windowsill 11.Besides, the control unit includes an uninterruptible power supply device(not shown) which is electrically connected with the electric activation mechanism 45 of the drive mechanism 4 and the drive mechanism 63 of the winding gear 6. Therefore, even the power supply is interrupted during fire, the carrier 3 may be operated by spare power or manually.
Furthermore, according to the present invention, as shown in Figs. 15 and 15a, one end of the cable 61 wound by the winding gear 6 is winding end 612. A pair of brakes 38 for respectively braking the winding end 612 are provided on the carrier 3 so as to avoid the risk that when the oil cylinder of the winding gear 6 leaks oil, the carrier 3 will loose speed. The brakes 38 includes a fixing pulley 36', i.e., the upper pulley 36'of the external face structures 3a of the carrier 3, and a movable pulley 381 located beside the fixing pulley 36' and capable of relatively changing the pitch. The winding end 612 of the cable 61 extends between the fixing pulley 36'and the movable pulley 381. This embodiment further comprises a pair of cranks 382 one end of which is pivoted on the carrier 3 through a shaft 383 and the other end of which is a free end and stores the spring force of an elastic element 384. A grip 382a is provided between the free ends. Such movable pulleys pair 381 are pivotally provided on both ends of the same shaft 381a which is pivotally provided on the middle segment of the crank 382 to perform a link motion.A guiding groove 3a1 is provided on the external face structures 3a of the carrier 3 particularly at the portion corresponding to the shaft 381a. In this manner, once the carrier 3 looses speed due to the severe oil leakage of the oil cylinder, an external force is exerted with the grip 382a to brake. During braking, the distance between the movable pulleys 381 and the fixing pulleys 36' is shortened and the movable pulleys 381 deflects. In the same time, the winding end 612 of the cable 61 is pressed to brake and a pressure is exerted on the grip 382a to achieve the slow descending.
In addition, as those skilled in the art may know, as shown by the imaginative line in Figs. 14, 16 and 17, optionally, more preferable is that this embodiment vertically provides a pair of guide rails 2 on the outer wall 10 at both sides of the windowsill 11 to guide the carrier 3 to attain a better stability. A second lower pulley 36a coaxial with the lower pulley 36 is provided outside the lower end of the edge frame of the internal face structures 3b of the carrier 3 while a second upper pulley 36a' coaxial with the lower pulley 36 is provided outside the upper end of the edge frame. Both pulleys are guided by such guide rails pair 2 to slide for ascending or descending. Such guide rails pair 2 includes a pair of separated horizontal rails, i.e., a upper rail 2a and a lower rail 2a' respectively on both side walls 110 of the windowsill 11 to guide the second upper pulley 36a' and the second lower pulley 36a of the carrier 3 for the carrier 3 to get on the windowsill 11 in position.
Figs.18 and 19 illustrate a fourth embodiment of the collapsible conveyer apparatus implemented on a building. The difference between this embodiment and the above embodiments is that the former can employ a pair of rotable arm for the carrier to vertically descend to a farther ground away from the building so as to avoid the obstacle at the lower portion of the building. According to the present invention, the main structure of the collapsible conveyer apparatus will be described in detail.
At least a carrier 3 is formed of a collapsible frame structure. In a collapsed state, the carrier 3 is accommodated on the windowsill 11 as a window grille. The carrier 3 (as shown in Fig. 15 )is formed by connecting a plurality of face structures 3a, 3b in the direction of length with a plurality of collapsible frames 3d in the direction of width, while a base plate 3e collapsible in the direction of width is connected to the bottom end of the carrier 3. A conventional ratchet journal J with one way pawl(for this element is prior art, no detailed description is given) is provided at the middle portion of the frames 3d for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. A ratchet journal J is provided at the middle portion of the base plate 3e for both ends to be collapsible relative to each other. The end portions at both ends are respectively connected with the face structures 3a, 3b through a ratchet journal J so as to be collapsed relative to each other. In this manner, the volume of the carrier 3 can be minimized. In the carrier 3, the face structures 33b of the windowsill 11 further comprises a door frame 3b'allowing to be opened relatively for the personnel to be in and out. Additionally, a lower pulley36 is provided at the corners on the bottom of the carrier3.
At least a pair of radial arms 7 is arranged in such a manner that above the carrier 3, one end each of radial arms 7, i.e., a fixing end 71 is provided, while the other end, i.e., a free end 72 can swing relatively. On each of the radial arms 7 is pivotally provided with several pulleys 65a, 65b.
At least a winding gear 6 including an electric activation mechanism 63 and a manual activation mechanism 64 is fixed above the windowsill 11 wherein the electric activation mechanism 63 drives an oil cylinder with a conventional oil pump to converse into a rotational movement for activating a pair of coaxial windlasses 62. Such pair of windlasses 62 are respectively wound with one end of a cable 61, while the other end of the cable is wound past the above mentioned pulley sets 65a, 65b with the end to hang the carrier 3 to provide power to the carrier 3.
At least a drive mechanism 4 containing an electric activation mechanism 45 and a manual activation mechanism 46 is fixed above the windowsill 11 and controlled to drive simultaneously one end of each of a pair of push rod devices 40 for the other end to extend and retract. The pair of push rod devices 40 are located at the left and right hand sides respectively above the carrier 3 so as to unfold the carrier 3. Each push rod device 40 has a telescopic rod 41 one end of which is activated by a screw rod 42 for the other end of the telescopic rod 41 to extend and retract.. The mechanical force generated from the electric activation mechanism 45 and the manual activation mechanism 46 can be transmitted to the screw rods 42 through, for example, a pair of coaxial bevel gears 44 so that the pair of telescopic rods 41 can be simultaneously activated. And, when such telescopic rods pair 41 extend, the free end 72 of the radial arms 7 are driven to swing to push the carrier 3 into an unfolded position and outside the windowsill 11.
Again as shown in Fig. 18 on a position relative to the windowsill 11, this carrier 3 comprises an internal face structures 3b and an external face structures 3a. The lower pulleys 36 are respectively provided inside the lower end of the edge frame of the internal face structures 3b and the external face structures 3a . And preferably, the upper pulleys 36' are respectively provided inside the upper end of the edge frame of the internal face structures 3b and the external face structures 3a to guide the cable 61. The fixing ends 71 and the free ends 72 of the above arms 7 are pivotally connected through a shaft 71a on which a pulley 65c is pivotally provided to guide the cable 61. An abutting portion 721 is formed on the end portion of the free ends 72 of the arms 7 to abut against the edge frame of the external face structures 3a of the carrier 3. On a fixing point of the windowsill 11 corresponding to the place where the above push rod 40 parks, the above push rod devices 40 are provided with at least a conventional holder device 11a which can hold the internal face structures 3b of the carrier 3 in position on the windowsill 11 with a predetermined force(see Fig. 14a). A steering pulley 65b is pivotally provided on the end portion of the free end 72 of the radial arms 7. Each of the cable pair 61 is wound through the steering pulley 65b to vertically extend into the edge frame of the external face structures 3a of the carrier 3, and subsequently wound through the upper pulleys 36' and the lower pulleys 36, and then extended toward the edge frame of the internal face structures 3b to be wound through the lower pulleys 36 and the upper pulleys 36'with the fixing end 611 to be vertically anchored on the fixing point of the sliding block 48 through a fixing piece 73 whereby when the free end 72 of the radial arms 7 is swung, the carrier 3 can be collapsed or unfolded relatively. In addition, an extending portion 74 is formed on the free end 72 of the radial arms 7. One end of the extending portion 74 is a starting end 74a, while the other end extends progressively toward the push rod devices 40 to form an extending end 74b. The extending portion 74 is formed with a guiding portion 741 from the starting end 74a to the extending end 74b.Correspondingly, the external end of the telescopic rod 41 is provided with a sliding element 41a which may be guided by the guiding portion 741 to slide. When the telescopic rod 41 extends, the sliding element 41 a slides progressively from the starting end 74a toward the extending end 74b to lengthen the head.
According to the present invention, as shown in Fig. 19, in a situation in need, the conveyer is unfolded along the outer wall to covey personnel or commodities. For example on fire, the push rod device 40 is driven for the telescopic rod 41 to extend and the carrier 3 to unfold simultaneously. In the same time, the free end 72 of the radial arms 7 swings outward. When the free end 72 of the radial arms 7 swings to unfold the carrier 3, the winding gear 6 is driven to slowly release cable 61. After the carrier 3 completely unfolds to let the personnel and commodities in, the free end 72 of the radial arms 7continues to swing outward to separate the carrier 3 from the holder device 11 a to push outside the windowsill 11 the carrier 3. In case that there is an obstacle on the lower portion of the building, the radial arms 7 is controlled to continue to raise outward for the carrier 3 to avoid the obstacle and descend vertically to a farther spot away from the building. On the contrary, when the emergency of the fire is released, the winding gear 6 is driven to pull the carrier 3 up to the descending point. The telescopic rod 41 begins to retract and pull inward back the free end 72 of the radial arms 7 to simultaneously push inward back the carrier 3 inside the windowsill 11 and toward and into the holder device 11a. After the claws(not shown) of the ratchet joint J of the carrier 3 is released manually or by conventional means such as electromagnetic valve, the winding gear 6 continues to reel and the telescopic rod 41 continues to retract and the free end 72 of the radial arms 7 begins to squeeze the carrier 3 to accomplish the collapsing. Besides, the control unit includes an uninterruptible power supply device(not shown) which is electrically connected with the electric activation mechanism 45 of the drive mechanism 4 and the drive mechanism 63 of the winding gear 6. Therefore, even the power supply is interrupted during fire, the carrier 3 may be operated by spare power or manually.
A pair of brakes 38 for respectively braking the winding end 612 are provided on the carrier 3 so as to avoid the risk that when the oil cylinder of the winding gear 6 leaks oil, the carrier 3 will loose speed. The brakes 38 includes a fixing pulley 36', i.e., the upper pulley 36'of the external face structures 3a of the carrier 3, and a movable pulley 381 located beside the fixing pulley 36' and capable of relatively changing the pitch. The winding end 612 of the cable 61 extends between the fixing pulley 36'and the movable pulley 381. This embodiment further comprises a pair of cranks 382 one end of which is pivoted on the carrier 3 through a shaft 383 and the other end of which is a free end and stores the spring force of an elastic element 384. A grip 382a is provided between the free ends. Such movable pulleys pair 381 are pivotally provided on both ends of the same shaft 381a which is pivotally provided on the middle segment of the crank 382 to perform a link motion. A guiding groove 3a1 is provided on the external face structures 3a of the carrier 3 particularly at the portion corresponding to the shaft 381a. In this manner, once the carrier 3 looses speed due to the severe oil leakage of the oil cylinder, an external force is exerted with the grip 382a to brake. During braking, the distance between the movable pulleys 381 and the fixing pulleys 36' is shortened and the movable pulleys 381 deflects. In the same time, the winding end 612 of the cable 61 is pressed to brake and a pressure is exerted on the grip 382a to achieve the slow descending.
In addition, according to the present invention, one end of the cable 61 to be wound by the winding gear 6 is a winding end 612. A pair of brakes 38 for respectively braking the winding end 612 (respectively see Figs. 15 and 15a)are provided on the carrier 3 so as to avoid the risk that when the oil cylinder of the winding gear 6 leaks oil, the carrier 3 will loose speed. The brakes 38 includes a fixing pulley 36', i.e., the upper pulley 36'of the external face structures 3a of the carrier 3, and a movable pulley 381 located beside the fixing pulley 36' and capable of relatively changing the pitch. The winding end 612 of the cable 61 extends between the fixing pulley 36'and the movable pulley 381. This embodiment further comprises a pair of cranks 382 one end of which is pivoted on the carrier 3 through a shaft 383 and the other end of which is a free end and stores the spring force of an elastic element 384. A grip 382a is provided between the free ends. Such movable pulleys pair 381 are pivotally provided on both ends of the same shaft 381a which is pivotally provided on the middle segment of the crank 382 to perform a link motion. A guiding groove 3a1 is provided on the external face structures 3a of the carrier 3 particularly at the portion corresponding to the shaft 381a. In this manner, once the carrier 3 looses speed due to the severe oil leakage of the oil cylinder, an external force is exerted with the grip 382a to brake. During braking, the distance between the movable pulleys 381 and the fixing pulleys 36' is shortened and the movable pulleys 381 deflects. In the same time, the winding end 612 of the cable 61 is pressed to brake and a pressure is exerted on the grip 382a to achieve the slow descending.
In addition, as those skilled in the art may know, the embodiments according to the present invention may be readily accomplished with variations and modifications. For example, the embodiment as shown in Figs.20 and 21 is a first variation of the collapsible conveyer according to the present invention. Fig. 20 shows the collapsed state of the carrier 3' while Fig.21 shows the unfolded state of the carrier 3'. The basic configuration of this embodiment is substantially the same as the above embodiments except that the portion between the face structure 3a and 3b of the carrier 3 is constituted of several frames 3d having multi-segments to be folded, while a base plate3e having multi-segments to be folded is connected to the bottom end of the carrier 3. Each frame 3d and the base plate3e are formed as multi-segments through several ratchet joints J. In this manner, the carrier 3' in collapsed position may reduce the volume and in the unfolded manner may enlarge to the greatest degree.
Furthermore, the embodiment as shown in Figs.22 and 23 is a second variation of the collapsible conveyer according to the present invention. Fig. 22 shows the collapsed state of the carrier 3" while Fig.21 shows the unfolded state of the carrier 3". As illustrated, the frames 3d between the face structure 3a and the face structure 3b of the carrier 3 is collapsed in a different way. The frames 3d intersect with each other and are pivoted on each other to collapse. The object to minimize the volume can also achieved by this embodiment.

A Brief Description of the Main Elements

Reference Numbers	Elements
1	building
10	outer wall
11a	windowsill

2	guiding rail
2a	upper rail
2a'	lower rail
21	teeth
21'	teeth
3	carrier
3a, 3b	face structure
3a1	guiding groove
3b'	door structure
3d	collapsible frame
3e	base plate
J	ratchet joint
30	second drive mechanism
300	bevel gear
301	second drive mechanism
302	manual activation mechanism
31	drive gear
32	idler gear
34	pulley
35	elastic element
36	lower pulley
36'	upper pulley
36a	second lower pulley
36a'	second upper pulley
38	brake
381	movable pulley
381a	shaft
382	crank
382a	grip
383	shaft
384	elastic element
4	drive mechanism
40	push rod
41	telescopic rod
41a	sliding element
411	claw
412	pull rod
42	screw rod
43	holder device
44	bevel gear
45	electric activation mechanism
46	manual activation mechanism
48	sliding block
481	claw
482	fixing piece
6	winding gear
61	cable
61a	suspension cable
611	fixing end
612	winding end
62	windlass
63	electric activation mechanism
64	manual activation mechanism
65a, 65b	steering pulley set
65c	pulley
7	radial arm
71	fixing end
71a	shaft

72	free end
721	abutting portion
73	fixing piece
74	extending portion
74a	starting end
74b	extending end
741	guiding portion

While the preferred embodiments have been described as above, it is noted that the preferred embodiments are not restrictive to the scope of implementation of the present invention. Modifications and variations may be made by a person skilled in the art without departing from the spirit of the claims of the present invention.

Claims

A collapsible conveyer apparatus for conveying personnel or commodities along an outer wall (10) of a building (1) provided with at least one windowsill (11) in an unfolded state, said collapsible conveyer apparatus comprising:
a pair of guide rails (2) vertically arranged on the outer wall (10) corresponding to lateral sides of the windowsill (11), each guide rail (2) being provided with teeth (21);

at least one carrier (3) configured as a collapsible frame-type structure which is accommodated on said windowsill (11) in a collapsed state;

at least one first drive mechanism (4) fixed above said windowsill (11) for extending or retracting a pair of push rod devices (40) so as to unfold or collapse the carrier (3);

at least one second drive mechanism (30) installed on said carrier (3) for driving a pair of drive gears (31) for engaging with the teeth (21) so as to ascend or descend the carrier (3) along said guide rails (2); and

a control unit electrically connected with said first drive mechanism (4) and said second drive mechanism (30).
A collapsible conveyer apparatus as claimed in claim 1, wherein said building (1) is provided with a plurality of windowsill (11) corresponding to a plurality of floors, each windowsill (11) being provided with one carrier (3), the pair of guide rails (2) being commonly used.
A collapsible conveyer apparatus as claimed in claim 2, wherein each windowsill (11) is associated with two opposite sidewalls (110), and a pair of horizontal upper guide rails (2a) and a pair of lower guide rails (2a') diverged from said pair of guide rails (2) respectively are formed on said two sidewalls (110) and each provided with teeth (21') for engaging with said drive gears (31) so as to guide and position said carrier (3) on said windowsill (11).
A collapsible conveyer apparatus as claimed in claim 3, wherein said carrier (3) comprises a pair of idler gears (32), and wherein the lower said carrier (3) is arranged, the smaller axial thickness the drive gears (31) and idler gears (32) have; on the other hand, the higher said carrier (3) is arranged, the larger axial thickness the drive gears (31) and idler gears (32) have.
A collapsible conveyer apparatus as claimed in claim 1, wherein said second drive mechanism (2) includes an electrical activation mechanism (301) and a manual activation mechanism (302).
A collapsible conveyer apparatus as claimed in claim 5, wherein mechanical force is transmitted among said electrical activation mechanism (301), manual activation mechanism (302) and said drive gears (31) through a bevel gear (300).
A collapsible conveyer apparatus as claimed in claim 1, wherein each of said push rod devices (40) has a telescopic rod (41) one end of which is actuated by a screw rod (42) such that the other end can be extended or retracted.
A collapsible conveyer apparatus as claimed in claim 7, wherein said drive mechanism (4) includes an electrical activation mechanism (45) and a manual activation mechanism (46).
A collapsible conveyer apparatus as claimed in claim 8, wherein mechanical force is transmitted among said electrical activation mechanism (45), manual activation mechanism (46) and said drive gears (42) through a bevel gear (44).
A collapsible conveyer apparatus as claimed in anyone of claim 5 to claim 8, wherein said control unit further comprises an uninterruptible power system which is electrically connected with said electric activation mechanism (45) of said first drive mechanism (4) and said electric activation mechanism (301) of said second drive mechanism (30) respectively.
A collapsible conveyer apparatus as claimed in claim 1, wherein said carrier (3) comprises a plurality of face structures (3a, 3b) at an outer side and an inner side and a plurality of collapsible frames (3d) at lateral sides and a collapsible base plate (3e) at a bottom side.
A collapsible conveyer apparatus as claimed in claim 11, wherein each of said frames (3d) has a ratchet joint (J) at a middle location so that said frames (3d) are capable of being folded, and both ends of each frame (3d) are also connected with said face structures (3a, 3b) respectively by ratchet joints (J) such that each frame (3d) is collapsible at the middle location and pivotable with respect to the face structures (3a, 3b).
A collapsible conveyer apparatus as claimed in claim 11, wherein said base plate (3e) has a ratchet joint (J) in a central line parallel to said face structures (3a, 3b), and an outer edge and an inner edge of said base plate (3e) are also connected with said face structures (3a, 3b) respectively by ratchet joints (J) such that said base plate (3e) is collapsible along the central line and pivotable with respect to the face structures (3a, 3b).
A collapsible conveyer apparatus as claimed in claim 11, wherein said carrier (3) has a face structure (3a) located at the outer face and a face structure (3b) located at the inner face; each of said push rod devices (40) is provided with at least one holder device (43) corresponding to said face structure (3b) at the inner side for holding said carrier (3) onto said windowsill (11); and an outer end of said telescopic rod (41) is provided with at least one claw (411) for catching the face structure (3a) of the carrier (3) at the outer side so as to collapse or unfold said carrier (3).
A collapsible conveyer apparatus as claimed in claim 14, wherein said pair of drive gears (31) are rotably provided at a lower end of the inner side face structure (3b) with respect to the lower guide rail (2a'); and a pair of idler gears (32) are rotably provided at an upper end of the inner side face structure (3b) with respect to the upper guide rail (2a).
A collapsible conveyer apparatus as claimed in claim 14, wherein said carrier (3) is inside said internal face structure (3b) and comprises a door frame (3b') relatively openable.
A collapsible conveyer apparatus for conveying personnel or commodities along an outer wall (10) of a building (1) provided with at least one windowsill (11) in an unfolded state, said collapsible conveyer apparatus comprising:
a pair of guide rails (2) vertically provided on an outer wall (10) on both sides of the windowsill (11);

at least one carrier (3) configured as a collapsible frame-type structure which is accommodated on said windowsill (11) in a collapsed state, and one end of said carrier (3) being provided with several pulleys to be guided by said guide rails (2);

at least one drive mechanism (4) fixed above said windowsill (11) to drive one end of a pair of push rod devices (40) for the other end thereof to extend or retract, and respectively on said push rod devices (40) several steering pulley sets (65a, 65b) being provided;

at least one winding gear (6) fixed within said windowsill (11), said winding gear (6) being driven to activate a pair of windlasses (62) on which one end of said cable (61) is wound, the other end of said cable (61) being wound past said steering pulley sets (65a, 65b) with the end to suspend said carrier (3), whereby when said push rod devices (40) extends, said carrier (3) is unfolded; and

a control unit electrically connected with said first drive mechanism (4) and said second drive mechanism (30) respectively.
A collapsible conveyer apparatus as claimed in claim 17, wherein said windowsill (11) comprises two opposite side walls (110), and said guide rails (2) is formed with a pair of separated horizontal rails, i.e., an upper rail (2a) and a lower rail (2b) respectively on said both side walls (110) of said windowsill (11)to guide said pulley (34) on said carrier (3) for said carrier (3) to get into said windowsill (11) in position.
A collapsible conveyer apparatus as claimed in claim 17, wherein said push rod devices (40) has a telescopic rod (41) one end of which is activated by a screw rod (42)for the other end thereof to extend or retract.
A collapsible conveyer apparatus as claimed in claim 19, wherein said drive mechanism (4) comprises an electric activation mechanism (45) and a manual activation mechanism (46).
A collapsible conveyer apparatus as claimed in claim 20, wherein the force among said electric activation mechanism (45), said manual activation mechanism (46) and said screw rod (42) is transmitted through a bevel gear (44).
A collapsible conveyer apparatus as claimed in claim 17, wherein said winding gear (6) comprises an electric activation mechanism (63) and a manual activation mechanism (64).
A collapsible conveyer apparatus as claimed in claim 22, wherein said electric activation mechanism (63) comprises an oil pump to drive an oil cylinder to converse into a rotational movement to activate said windlass (62).
A collapsible conveyer apparatus as claimed in claim 20 or 22, wherein said control unit comprises an uninterruptible power supply device which is electrically connected with said electric activation mechanism (45) of said drive mechanism (4) and said drive mechanism (63) of said winding gear (6) respectively.
A collapsible conveyer apparatus as claimed in claim 17, wherein said carrier (3) is formed by connecting a plurality of face structures (3a, 3b) in the direction of length with a plurality of collapsible frames (3d) in the direction of width, while a base plate (3e ) collapsible in the direction of width is connected to the bottom end of the carrier 3.
A collapsible conveyer apparatus as claimed in claim 25, wherein the middle portion of said frames (3d) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through said ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 19, wherein the middle portion of the base plate (3e) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through a ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 25, wherein said carrier (3) comprises an internal face structures (3b) and an external face structures (3a); at least a holder device (43) is provided on a fixing point of said push rod devices (40) corresponding to said internal face structures (3b) to hold said carrier (3) on said windowsill (11)in position; at least a claw (411) is provided at the end of said telescopic rod (41) corresponding to said external face structures (3a) to relatively collapse or unfold said carrier (3).
A collapsible conveyer apparatus as claimed in claim 25, wherein a pair of pulleys (34) are provided on the place where the upper outside of said internal face structures (3b) corresponds to the upper rail (2a) and a pair of pulleys (34) are provided on the place where the lower outside thereof corresponds to said lower rail (2a').
A collapsible conveyer apparatus as claimed in claim 28, wherein said carrier (3) further comprises a door frame (3b') relatively openable on said internal face structures (3b).
A collapsible conveyer apparatus as claimed in claim 28, wherein said carriers (3) are suspended respectively on the end of said cable (61)of said winding gear (6) by a pair of suspension cable (61a) both ends of which are respectively hung above said internal face structures (3b) and said external face structures (3a).
A collapsible conveyer apparatus as claimed in claim 25, wherein both ends of said cable (61) respectively extends in said internal face structures (3b) and said external face structures (3a), and are respectively provided with an elastic element (35) for exerting a spring force to draw the remaining length inside the frame.
A collapsible conveyer apparatus as claimed in claim 31, wherein said push rod devices (40) comprises a sliding block (48) which can slide along said telescopic rod (41) and a steering pulley (65b) is pivotally provided on said sliding block (48) to pull said cable (61), whereby as said carriers (3) is unfolded, it depends on the shift of gravity center of the carrier 3 to slide.
A collapsible conveyer apparatus as claimed in claim 33, wherein a pull rod (412) is further provided on the end of said telescopic rod (41) so that when said carrier (3) is unfolded, said sliding block (48) and said telescopic rod (41) are driven to perform a link motion.
A collapsible conveyer apparatus for conveying personnel or commodities along an outer wall (10) of a building (1) provided with at least one windowsill (11) in an unfolded state, said collapsible conveyer apparatus comprising:
at least one carrier (3) configured as a collapsible frame-type structure which is accommodated on said windowsill (11) in a collapsed state, a lower pulley (36) being pivotally provided on the bottom corners of said carrier(3);

at least one drive mechanism (4) fixed above said windowsill (11) to drive one end of a pair of push rod devices (40) for the other end thereof to extend or retract, and respectively on said push rod devices (40) several steering pulley sets (65a, 65b) being provided;

at least one winding gear (6) fixed within said windowsill (11) , said winding gear (6) being driven to activate a pair of windlasses(62) on which one end of said cable (61) is wound, the other end of said cable (61) being a fixing end (611) to be wound past said steering pulley sets (65a, 65b) and said lower pulley (36) with the end to be anchored on a fixing spot whereby when said push rod devices (40) extends, said carrier (3) is unfolded pushed out of said windowsill (11) ; and

a control unit electrically connected with said first drive mechanism (4) and said second drive mechanism (30) respectively.
A collapsible conveyer apparatus as claimed in claim 35, wherein said push rod devices (40) has a telescopic rod (41) one end of which is activated by a screw rod (42) for the other end thereof to extend or retract.
A collapsible conveyer apparatus as claimed in claim 35, wherein said drive mechanism (4) comprises an electric activation mechanism (45) and a manual activation mechanism (46).
A collapsible conveyer apparatus as claimed in claim 35, wherein the force among said electric activation mechanism (45), said manual activation mechanism (46) and said screw rod (42) is transmitted through a bevel gear (44).
A collapsible conveyer apparatus as claimed in claim 35, wherein said winding gear (6) comprises an electric activation mechanism (63) and a manual activation mechanism (64).
A collapsible conveyer apparatus as claimed in claim 35, wherein said electric activation mechanism (63) comprises an oil pump to drive an oil cylinder to converse into a rotational movement to activate said windlass (62).
A collapsible conveyer apparatus as claimed in claim 37 or 39, wherein said control unit comprises an uninterruptible power supply device which is electrically connected with said electric activation mechanism (45) of said drive mechanism (4) and said drive mechanism (63)of said winding gear (6) respectively.
A collapsible conveyer apparatus as claimed in claim 35, wherein said carrier (3) is formed by connecting a plurality of face structures (3a, 3b) in the direction of length with a plurality of collapsible frames (3d) in the direction of width, while a base plate (3e ) collapsible in the direction of width is connected to the bottom end of the carrier 3.
A collapsible conveyer apparatus as claimed in claim 35,
wherein the middle portion of said frames (3d) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through said ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 35, wherein the middle portion of the base plate (3e) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through a ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 42, wherein said carrier (3) comprises an internal face structures (3b) and an external face structures (3a); said lower pulleys (36) are respectively pivotally provided inside the lower end of the edge frame of said internal face structures (3b) and said external face structures (3a); and preferably, said upper pulleys (36') are respectively provided inside the upper end of the edge frame of said internal face structures (3b) and said external face structures (3a) to guide said upper pulleys (36') of said cable (61).
A collapsible conveyer apparatus as claimed in claim 45, wherein said carrier (3) further comprises a door frame (3b') relatively openable on said internal face structures (3b).
A collapsible conveyer apparatus as claimed in claim 45,
wherein said push rod devices (40) further comprises a sliding block (48) one end of which can slide along said telescopic rod (41) and the other end of which is provided with a claw (481); the end of said telescopic rod (41) is provided with a claw (411) corresponding to said external face structures (3a) of said carrier(3)to grip on left and right side, both of which can put said carrier (3) into collapsed or unfolded position.
A collapsible conveyer apparatus as claimed in claim 33, wherein a pull rod (412) is further provided on the end of said telescopic rod (41) so that when said carrier (3) is unfolded, said sliding block (48) and said telescopic rod (41) are driven to perform a link motion.
A collapsible conveyer apparatus as claimed in claim 48, wherein a steering pulley (65b) is provided on the end of said telescopic rod (41) for each of said cable (61) to be vertically wound through said lower pulleys (36) of said carriers (3) and said fixing end (611) to be anchored vertically on the fixing spot of said sliding block (48).
A collapsible conveyer apparatus as claimed in claim 49, wherein one end of said cable (61) wound by said winding gear (6) is a winding end (612); a pair of brakes (38) for respectively braking said winding end (612) are provided on said carrier (3).
A collapsible conveyer apparatus as claimed in claim 50, wherein said brakes (38) includes a fixing pulley (36') and a movable pulley (381) capable of relatively changing the pitch, said winding end (612) of said carriers (3) passing through both pulleys.
A collapsible conveyer apparatus as claimed in claim 51, further comprising a pair of cranks (382) one end of which is pivoted in position through a shaft (383)and the other end of which is a free end provided with a grip (382) between the free ends; said movable pulleys pair (381) are pivotally provided on the middle segment of said crank (382) to perform a link motion whereby during braking, the distance between said movable pulleys (381) and said fixing pulleys (36') is shortened and said movable pulleys (381) deflects and in the same time, said winding end (612) of said cable (61) is braked.
A collapsible conveyer apparatus as claimed in claim 35, wherein a pair of guiding rails (2) are vertically provided on said outer walls (10) on both sides of said windowsill (11)optionally.
A collapsible conveyer apparatus as claimed in claim 53, wherein a second lower pulley (36a) coaxial with said lower pulley (36) is provided outside the lower end of the edge frame of said internal face structures (3b) of said carrier (3) while a second upper pulley (36a') coaxial with said lower pulley (36)is provided outside the upper end of the edge frame, both pulleys capable being guided by said guide rails pair (2) to slide to descend or ascend.
A collapsible conveyer apparatus as claimed in claim 54, wherein said guide rails pair (2) includes a pair of separated horizontal rails, i.e., a upper rail (2a) and a lower rail (2a') respectively on both side walls (110) of said windowsill (11) to guide said second upper pulley (36a') and said second lower pulley (36a) of said carrier (3) for said carrier (3) to get on said windowsill (11) in position.
A collapsible conveyer apparatus for conveying personnel or commodities along an outer wall (10) of a building (1) provided with at least one windowsill (11) in an unfolded state, said collapsible conveyer apparatus comprising:
at least one carrier (3) configured as a collapsible frame-type structure which is accommodated on said windowsill (11) in a collapsed state, a lower pulley (36) being pivotally provided on the bottom corners of said carrier (3);

At least a pair of radial arms (7) arranged in such a manner that above said carrier (3), one end each of said radial arms 7, i.e., a fixing end (71) is provided, while the other end, i.e., a free end (72) can swing relatively, on each of said radial arms (7) being pivotally provided with several pulleys (65a, 65b);

at least one winding gear (6) fixed within said windowsill (11), said winding gear (6) being driven to activate a pair of windlasses(62) on which one end of said cable (61) is wound, the other end of said cable (61) being a fixing end (611) to be wound past said steering pulley sets (65a, 65b) and said lower pulley (36) with the end to be anchored on a fixing spot ;

at least one drive mechanism (4) fixed above said windowsill (11) to drive one end of a pair of push rod devices (40) for the other end to extend and retract whereby when said push rod devices (40) extends, said free end (72) of said radial arm swing to unfold said carrier (3) and pushed the same out of said windowsill (11); and

a control unit electrically connected with said first drive mechanism (4) and said second drive mechanism (30) respectively.
A collapsible conveyer apparatus as claimed in claim 56, wherein said push rod devices (40) has a telescopic rod (41) one end of which is activated by a screw rod (42) for the other end thereof to extend or retract.
A collapsible conveyer apparatus as claimed in claim 57, wherein said drive mechanism (4) comprises an electric activation mechanism (45) and a manual activation mechanism (46).
A collapsible conveyer apparatus as claimed in claim 58, wherein the force among said electric activation mechanism (45), said manual activation mechanism (46) and said screw rod (42) is transmitted through a bevel gear (44).
A collapsible conveyer apparatus as claimed in claim 56, wherein said winding gear (6) comprises an electric activation mechanism (63) and a manual activation mechanism (64).
A collapsible conveyer apparatus as claimed in claim 60, wherein said electric activation mechanism (63) comprises an oil pump to drive an oil cylinder to converse into a rotational movement to activate said windlass (62).
A collapsible conveyer apparatus as claimed in claim 58 or 60, wherein said control unit comprises an uninterruptible power supply device which is electrically connected with said electric activation mechanism (45) of said drive mechanism (4) and said drive mechanism (63) of said winding gear (6) respectively.
A collapsible conveyer apparatus as claimed in claim 56, wherein said carrier (3) is formed by connecting a plurality of face structures (3a, 3b) in the direction of length with a plurality of collapsible frames (3d) in the direction of width, while a base plate (3e) collapsible in the direction of width is connected to the bottom end of the carrier 3.
A collapsible conveyer apparatus as claimed in claim 63, wherein the middle portion of said frames (3d) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through said ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 63, wherein the middle portion of the base plate (3e) comprises a ratchet journal (J) for both ends to be collapsible relative to each other and the end portions at both ends are respectively connected with said face structures (3a, 3b) through a ratchet journal (J) so as to be collapsed relative to each other.
A collapsible conveyer apparatus as claimed in claim 63, wherein said carrier (3) comprises an internal face structures (3b) and an external face structures (3a); said lower pulleys (36) are respectively pivotally provided inside the lower end of the edge frame of said internal face structures (3b) and said external face structures (3a) ; and preferably, the upper pulleys (36') are respectively provided inside the upper end of the edge frame of said internal face structures (3b) and said external face structures (3a) to guide said cable (61).
A collapsible conveyer apparatus as claimed in claim 66, wherein said carrier (3) further comprises a door frame (3b') relatively openable on said internal face structures (3b).
A collapsible conveyer apparatus as claimed in claim 56, wherein said fixing ends (71) and said free ends (72)of said arms (7) are pivotally connected through a shaft (71a) on which a pulley (65c) is pivotally provided to guide said pulley (65c) of said cable (61).
A collapsible conveyer apparatus as claimed in claim 68, wherein an extending portion (74) is formed on said free end (72) of said radial arms (7), one end of said extending portion 74 being a starting end (74a), the other end extending progressively toward said push rod devices (40) to form an extending end (74b).
A collapsible conveyer apparatus as claimed in claim 69, wherein said extending portion (74) is formed with a guiding portion (741) from said starting end 74a to said extending end (74b); the external end of said telescopic rod (41) is provided with a sliding element (41a) which may be guided by said guiding portion (741) to slide whereby when said telescopic rod (41) extends, said sliding element (41a) slides progressively from said starting end (74a) toward said extending end (74b).
A collapsible conveyer apparatus as claimed in claim 70, wherein an abutting portion (721) is formed on said free end (72) of said radial arms (7) to abut against the edge frame of said external face structures (3a) of said carrier (3); at least a holder device (11a) is provided on a position corresponding to the edge frame of said internal face structures (3b) of said carrier (3) to hold said carrier (3) on said windowsill (11) in position, both collapsing or unfolding said carrier (3).
A collapsible conveyer apparatus as claimed in claim 71, wherein a steering pulley (65b) is pivotally provided on the end portion of said free end (72) of said radial arms (7) to guide said cable (61) smoothly through said upper pulleys (36') and said lower pulley (36) of said carrier (3) to anchor said fixing point (611) of said cable (61) on the fixing point of said radial arms (7) through a fixing piece (73).
A collapsible conveyer apparatus as claimed in claim 72, wherein one end of said cable (61) wound by said winding gear (6) is a winding end (612); a pair of brakes (38) for respectively braking said winding end (612) are provided on said carrier (3).
A collapsible conveyer apparatus as claimed in claim 73, wherein said brakes (38) includes a fixing pulley (36') and a movable pulley (381) capable of relatively changing the pitch, said winding end (612) of said carriers (3) passing through both pulleys.
A collapsible conveyer apparatus as claimed in claim 74, further comprising a pair of cranks (382) one end of which is pivoted in position through a shaft (383) and the other end of which is a free end provided with a grip (382a) between the free ends; said movable pulleys pair (381) are pivotally provided on the middle segment of said crank (382) to perform a link motion whereby during braking, the distance between said movable pulleys (381) and said fixing pulleys (36') is shortened and said movable pulleys (381) deflects and in the same time, said winding end (612) of said cable (61) is braked.